EasyManuals Logo

ZiLOG System 8000 Hardware Reference Manual

Default Icon
366 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #27 background imageLoading...
Page #27 background image
HRM
Zilog
HRM
In
addition
to
data
storage
space,
the
memory
arrays
have
storage
for
the
check
bits
used
by
the
error
checking
and
correcting
logic.
During
memory
transactions,
all
data
passes
through
the
memory
controller;
,the
memory
has
no
direct
connection
to
the
system,
bus
(ZBI)
(Figure
1-9).
Instead,
a
high-speed,
32-bit
bus
connects
the
Memory
Array
board
to
the
ECC
Controller
board.
1.2.6.
Secondary
Serial
Boards
(SSB):
Up
to
two
are-
per-
mitted
in
certain
optional
configurations.
Each
SSB
pro-
vides
for
eight
additional
input/output
(I/O)
asynchronous
full
duplex
serial
channels
for
terminal
distribution
to
TTYs
8 - 15
and
16
23.
Each
SSB
also
provides
a
Centronics/Data
Products
parallel
printer
port.
The SSBs
are
connected
to
the
system
backplane
and
supplement
the
serial
and
parallel
I/O
on
the
CPU
board.
The Z8001A
microprocessor
on
the
CPU
board
acts
as
the
host
and
con-
trols
the
SSB
via
the
system
Z-Bus
Backplane
Interconnect
(ZBI)
.
1.3.
System
Expansion
The
System
8000
can
be
expanded
by
adding:
~
Disk
drives
up
to
a
total
of
four,
~
Cartridge
tape
drives
up
to
a
total
of
four,
~
Memory
Arrays
up
to
a
total
of
4
Mbytes,
~
SSBs
up
to
a
total
of
24
users
and
two
parallel
printer
ports.
Consult
your
sales
representative
for
specific
details
con-
cerning
optional
configurations.
1-12
Zilog
1-12

Table of Contents

Other manuals for ZiLOG System 8000

Preview: User Manual
User Manual65 pages

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the ZiLOG System 8000 and is the answer not in the manual?

ZiLOG System 8000 Specifications

General IconGeneral
BrandZiLOG
ModelSystem 8000
CategoryDesktop
LanguageEnglish

Related product manuals